# 拓展练习——绘制下列图形，要求如下：
# 大中小点直径分别为：70，50，30

import turtle

turtle.ht()

# 画最外的红色圆
turtle.pencolor("red")
turtle.fillcolor("red")
turtle.begin_fill()
turtle.circle(35)
turtle.end_fill()
# 画中间黄色的圆
turtle.penup()
turtle.goto(0, 10)
turtle.pendown()
turtle.pencolor("yellow")
turtle.fillcolor("yellow")
turtle.begin_fill()
turtle.circle(25)
turtle.end_fill()
# 画内测蓝色的圆
turtle.penup()
turtle.goto(0, 20)
turtle.pendown()
turtle.pencolor("blue")
turtle.fillcolor("blue")
turtle.begin_fill()
turtle.circle(15)
turtle.end_fill()

turtle.done()
